SEC1210 datasheet(18/218 Pages) MICROCHIP

18 / 218 page

SEC1110/SEC1210

DS00001561C-page 18

 2013 - 2016 Microchip Technology Inc.

Note 6-1

The Smart Card1 and Smart Card2 power supply output is powered down at reset state.

Note 6-2

The Smart Card1 and Smart Card2 power supply output requires an external 1.0

F capacitor.

Note 6-3

Internal voltage regulator output for USB, GPIO 3.3 V IO Supply. This pin requires an external 1.0

F

capacitor.

Note 6-4

A weak pull down is present on the TEST, JTAG_CLK, and JTAG_TDI pads. If JTAG is connected,

and this pad is pulled high, then the reset state of the pins 8 (JTAG_TMS), 13(JTAG_CLK),

14(JTAG_TDO), and 15(JTAG_TDI) functions in JTAG Mode. The weak pull-down can be disabled

after reset release by software.

Note 6-5

RESET_N is an analog input, which when low, powers down all internal voltage regulators and the

pads are in high impedance state. The pads function as input, including pull-ups pull-downs

functionality after internal 3.3V power (VDD33) is good.

Note 6-6

The TEST, JTAG_CLK, and JTAG_TDI/GPIO[19] values at internal power on reset release (after

RESET_N release) is captured in the chip to enter various functional or test modes.

Note 6-7

Smart Card2 power supply output is powered down at reset state.

Note 6-8

A weak pull-down is present on TEST, JTAG_CLK, and JTAG_TDI pads if JTAG is connected, and

this pad is pulled high. The reset state of the pins 10(JTAG_TMS), 19(JTAG_CLK), 20(JTAG_TDO),

and 21(JTAG_TDI) function in JTAG Mode. The weak pull-down can be disabled after reset release

by software.

Note 6-9

The LCD regulator LDO4 and Smart Card2 output is powered down at reset state.

SPI1_CLK/CTS

GPIO pin for SPI1 clock

SPI1_CE/RTS

GPIO pin for SPI1 chip enable

SPI1_MOSI/TXD

GPIO pin for SPI1 data

TEST

Test mode pin

Note 6-8

Yes

Note 6-6

USB_DM

USB D-

USB_DP

USB D+

VDD33

Note 6-3

ANALOG

JTAG_CLK

JTAG clock pin

Note 6-8

Yes

Note 6-6

SC_LED_ACT_N/JTAG_TDO

GPIO output for

Smart Card1 LED

SC2+PRSNT_N/JTAG_TDI

GPIO input for Smart Card1

presence detect.

Note 6-8

Yes

Note 6-6

RESET_N

Reset input

ANALOG

Note 6-5

SC2_IO

Smart Card2 IO pin

SC2_CLK

Smart Card2 CLK pin

VSS

Package ground

ANALOG

TABLE 6-4:

SEC1210 QFN 24-PIN RESET STATES

Reset State

Pin Name

Function

Output

PU/PD

Input

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